NTT Group is comprised of NTT (the holding company) and 542 subsidiaries and affiliates (of which 397 are consolidated subsidiaries). NTT Group's principal business activities are regional communications, long distance and international communications, mobile communications, and data communications. As the leader of Japan's telecommunications industry, NTT Group has devoted its efforts to the growth of the market. With a full-scale broadband and ubiquitous era approaching, NTT Group is endeavoring to anticipate the needs of the times and changes in the Information Technology (IT) market and take full advantage of the Group's management resources to develop new broadband businesses that will serve as new revenue sources into the future. At the same time, NTT Group is focusing its efforts on the development of its fiber-optic access infrastructure and the creation of a next-generation totally Internet Protocol (IP) based network. 

NTT Develops Bio-inspired Algorithm for Network Virtualization (Jan 24, 2013)